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Question: Answered & Verified by Expert
The reaction of $P_2$ with $X$ leads selectively to $\mathrm{P}_4 \mathrm{O}_6$. The $\mathrm{X}$ is
Chemistryp Block Elements (Group 15, 16, 17 & 18)JEE Main
Options:
  • A
    dry $\mathrm{O}_2$
  • B
    a mixture of $\mathrm{O}_2$ and $\mathrm{N}_2$
  • C
    moist $\mathrm{O}_2$
  • D
    $\mathrm{O}_2$ in the presence of aq. $\mathrm{NaOH}$
Solution:
2525 Upvotes Verified Answer
The correct answer is:
a mixture of $\mathrm{O}_2$ and $\mathrm{N}_2$
White phosphorus on reaction with limited supply of oxygen gives lower oxide $P_4 \mathrm{O}_6$. Therefore, air $\left(\mathrm{O}_2+\mathrm{N}_2\right)$ is a good source for controlled supply of oxygen and the best choice for controlled oxidation of white phosphorus into lower oxide $\mathrm{P}_4 \mathrm{O}_6$.

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